/private/tftpboot
# chmod whole folder to 777
sudo chmod -R 777 /private/tftpboot
# add a file and also chmod 777
chmod 777 /private/tftpboot/yourfile
Start daemon
sudo launchctl load -F /System/Library/LaunchDaemons/tftp.plist
Stop daemon
sudo launchctl unload /System/Library/LaunchDaemons/tftp.plist
Test tftp
## Fetch file your.file
tftp -e 127.0.0.1
tftp> get <your.file>
Received 4979 bytes in 0.0 seconds
## In case file is not available
get <your.file>
Error code 256: File not found